Presser plate for dispensing machine feed tables



Patented June 10, 1941 --BaEssER PLATE Foa DISPENSING MACHINE FEED TABLES Lewis WalterGol'dstein, New York, N. ,Y., assigiior to Lipton Maniifacturing Co., I nc.,' New York,

,IOriginaI ap lications July '18, vv1939, Serial-1N9 "30,".19 40, Serial No. 326,998

.8 45 an .l ell q 71. .1939 ia No- 295,536. Divided and this applieationll/Iarch Claims. (Cl.'-2 71--2;1)

This invention relates to tape dispensing machines and is a division v of my copending' application, Serial No. 295,536,!filed September 18, 1939, for Presser plate for tape dispensing machines, now Patent No. 2,209,266, July 23, 1940,

and also of my Patent No. 2,175 ,959whichissued October 10, 1939.

An object of this invention is to provide an improved presser plate in association with a tape guiding and feeding table which is interposed between a tape severing means and a tape feeding wheel, the presser plate being so constructed that it will not obstruct the movement of the tape over the table, the said tape guiding and feeding table, tape severing meansand feeding wheel being in the form disclosed in the application and patent aforesaid.

Anotherobject of this invention is to provide a presser plate of this kind which isadapted to be fixed in its adjusted position relative to the table, the plate including-an improved clamping means for holding the plate in adjusted position.

A further object of this invention is to provide a presser plateofthis kind in combination with a tape feeding table having a tape guiding channel, the presser plate being formed in such a manner that in its lowermost position relative to the table the plate will not bind against the tape.

A still further object of this invention is. to provide a presser, plate of this kind which may easily be replacedor removed for cleaning or repairing the machine.

To the foregoing objects and to otherswhich may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and illustrated in the accompanying drawing wherein are shown embodiments of the invention, but it is to beunderstood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

Figure 1 is fragmentary vertical section of a tape dispensing machine embodying my invention;

Figure 2 is a sectional view taken on the line 2-2 of Figure 1; and

Figure 3 is a sectional view taken on the line 3 3 of Figure 1.

Referring to the drawing, the numeral I0 designates generally a housing provided with parallel side walls II and a cover l2 which is formed on the opposite longitudinal edges thereof with derensie anss J 3 snug u aeeab Wi the upper edges of theTsi'dewalls'l'l so ,as to re- .rnqyably secure the fe'over [2 ,on the housing I0.

"ljhe form of tape dispelisirig machine, shown imFigur 1 is more specificallydescribed in my appending, application, Serial No. 295,536 and my Fa'tentNdf'2,175,959; Briefly, the tape dispensing machine shown in Figure 1 includes a feedm deviceiintheform of a relatively large feedm wheel 14' which, isff xed toa, drive shaft 15 and an idler feeding wheel. i6 is rotatably .carriedfby an idlernshaft, HQ The shaft I'lisremovably ,mountedin vertically disposed guide members l3 ,whichare carried, by the inner surfacesof the s ide Walls H and a spring J9 engages the shaft ll andconstantly urges the idler wheel jfi intoengagementwith a strip of tape T which is moved forwardly over, a, tape feeding table generally designated as 12E! and which is securedbetween the two, side walls H A a severin me h n e r ll desigmated, as .2i is disposedat the forward end of the table llil and is operated lay ng-tans of a rock 1ever 22. 'I 'he rocklever 22 is operated from a lever tripping memberjtwhich is carriedv by the drive shaft 15. A tape moistening device generally, designated as 2 4 vis "disposed forwardly of the tape severing mechanism 2| andfin'cludes a moistening-brush-fl disposed in a reservoir 26. A presser plate structure generally 'designated a s- 2,1 isadjustably mount edbetween the two sidewalls I I forwardly of the severing mechanis n'2l and is adaptedto maintain the tape T in contact with the bristles of the moistening brush-25. The specific details of the moistening structure-24 including the presser. plate 21, is embodied in my copending application, supra.

Thefeeding table 29 includes a table-member 28 which has disposed along the opposite longitudinal edges, a pair of upstanding ribs29. The ribs 29 withthe table member 28 form a tape guiding channel 30 within which the tape Tlis adapted to be -moved by the feeding-wheel l4. A'presser plate generally designated as 3l is interposed between the idler feed wheel. 16 and the severing mechanism II (and vcomprises a plate-like body 32v which is tapered or bevelled at its forward endas at 33. The body 32 is provided along the opposite longitudinal edges thereof with a rabbeted portion 34 within which the ribs 29 engage, so that the downwardly oifset intermediate portion 35 of the body 3] will extend downwardlyinto the tape feeding channel at. The two side walls H on the inner faces thereof are each provided with a pair of parallel guide members 33 and the body 32 is provided with a pin or trunnion 31 on each side thereof which is adapted to slidably engage be tween the pair of guide members 33. The guide members 35 and the pin or trunnions 31 serve as-positioning means for positioning the presser plate 3| in the desired position between the idler feed wheel Hi and the severing mechanism 2|. The body 32 at the rear thereof is provided with a concave recess 38 within which the idler wheel l6 and a portion of the spring IS are adapted to loosely engage. By providing the recess 33 at the rear of the body 32, the body 32 is formed with a pair of rearwardly directed wings 39 which are disposed on opposite sides of the idler feed wheel it and also on opposite sides of the feeding wheel l4.

The body 32 on its upper side is provided with a pair of upstanding spaced apart parallel ribs or guide members 48 which extend transversely across the body 32. A longitudinally bowed pressor plate clamping member 4| extends transversely across the body 32 and is of such a width that the clamping member 4| may loosely engage between the ribs All. The clamping member ill normally of a length when in bowed form and when relieved of tension," that the ends thereof will loosely engage the guide members 35 so that the presser plate 3| may be vertically adjusted relative to the table 2|]. A threaded tensi-oning member including a bolt 42 provided with a knurled head 43 engages through an opening 44 formed in the center of the clamping member 4| and the bolt 42 is threaded into a threaded opening 45 formed in the body 32 substantially centrally of the channel formed by the two parallel ribs 4 I In the use and operation of this presser plate in association with the tape dispensing machine embodied in my copending application hereinbefore mentioned and in my Patent No. 2,175,- 959, the plate 3| is removably mounted between the side walls II with the slide members or pins 31 loosely engaging between the vertical guide members 36 carried by the side walls H. The presser plate 3| may be initially lowered until the rabbeted portions 34 thereof engage the channel forming ribs 29 of the table 20. In the event the tape T is of such a thickness that the underside of the offset portion 35 of the plate 3| will frictionally engage the tape T, the plate 3| may be raised slightly by loosening the ten'sioning bolt 42 and then tightening this bolt so as to cause the opposite ends of the clamping member 4| to tightly engage the inner faces of the guide members 36.

If desired, the presser plate 3| may be disposed with the undersurf-ace thereof, substantially parallel with the confronting face of the table 20, or the presser plate 3| may be tilted downwardly at its forward end so that the forward or bevelled end 33 of the presser plate 3| will be closer to the surface of the tape T than the opposite or intake end of the presser plate 3|. In this manner the presser plate 3| will form a forwardly reducing guide channel which tapers in the direction of the severing mechanism 2|. In actual practice the presser plate 3| is preferably so positioned relative to the table 20, that the tape T may freely move within the tape guiding channel 33.

It has been found from past experience that contact of the presser plate 3| with the tape moving over the feeding table will frequently cause the tape to buckle under the action of the feeding mechanism whereas with a presser plate as constructed according to this invention, the presser plate will not at any time cause any friction between the tape T and the table 20. The purpose of the presser plate 3| is to guide the tape T toward the severing and moistening mechanism and to guide the tape in such a manner that the tape will not buckle as it is pushed forwardly by the feeding mechanism.

The provision of a vertically adjustable presser plate permits the use of different thicknesses of tape, it being understood that certain tapes are provided with a relatively thick coating of adhesive, whereas other types of tapes are formed of thin paper and a fairly thin coating of adhesive. By providing a presser plate as hereinbefore described, the tape dispensing machine can be readily and quickly adjusted to accommodate difierent types or thicknesses of tape which it may be desired to use in the tape dispensing machine. It is well known that certain tape dispensing machines are available which use a spring pressed presser plate for maintaining the presser plate in contact with the tape moving over the feeding table and certain other type-s of machines embody the use of a relatively heavy presser plate which is p-ivotally mounted between the side walls of the housing and gravitatingly engages the surface of the tape. However, these types of presser plates have caused considerable difficulty in the operation of the dispensing machine in that the dispensing machine cannot be used for different thicknesses of adhesive tape, and it is necessary for the proper operation of such dispensing machine that the tape be relatively stiff so that it can be pushed forwardly by the tape feeding mechanism.

However, with a presser plate as hereinbefore described, the thickness of the adhesive tape will not have any effect on the successful operation of the tape dispensing machine as the presser plate 3| can be easily and quickly adjusted to accommodate different thicknesses of adhesive tape and the presser plate associated with the moistening device may also be finely adjusted as described in my copending application to accommodate difierent kinds of adhesive tape.

What I claim is:

1. In a tape dispensing machine, a tape guiding table, longitudinal ribs extending upwardly of the opposite edges of the table, a presser plate above said table, opposed vertical guides extending upwardly of opposite edges of said table, means carried by said plate slidably engaging said guides, and means carried by said plate engageable with said guides for holding said plate in adjusted position relative to said table.

2. In a tape dispensing machine, a housing, a tape guiding table carried by said housing, a pair of spaced apart parallel longitudinal ribs extending upwardly of said table and forming a guideway therebetween, a presser plate above said table, vertical guide members carried by said housing extending upwardly of opposite edges of said table, means carried by said plate engaging said guide members, a plate clamping member having its ends engaging said guide members, and means engaging said plate and said clamping member for holding said plate in adjusted posi tion relative to said table.

3. In a tape dispensing member including a housing, a tape guiding table in said housing, a

pair of longitudinal ribs carried by said table.

and forming a guideway therebetween, a presser plate above said table and adapted in one position thereof to engage on said ribs, coacting guide means carried by said housing and said plate, an upwardly projecting part carried by said plate, a longitudinally bowed clamping member having its ends engaging said coacting guide means, and means engaging said part and said clamping member for holding said plate in adjusted position relative to said table.

4. In a tape dispensing member including a housing, a tape guiding table in said housing, a pair of longitudinal ribs carried by said table and forming a guideway therebetween, a presser plate above said table and adapted in one position thereof to engage on said ribs, coacting guide means carried by said housing and said plate, an upwardly projecting part carried by said plate, said part having a channel therein extending transversely of said plate, a longitudinally bowed resilient clamping member disposed with the opposite ends thereof in said channel and engaging said coacting guide means, and a tensioning member engaging through said memher and threaded into said part for adjustably securing said plate relative to said table.

5. A presser plate for a tape guiding and feeding table comprising a plate-like body, a pair of upstanding spaced apart parallel ribs carried by said body and extending transversely thereof, a longitudinally bowed resilient clamping member disposed with the concave side thereof lowermost and the opposite ends slidably engaging between said ribs, and a threaded tensioning member en gaging through said clamping member and threaded into said body.

6. In a tape dispensing device including a housing provided with side walls, a tape guiding table between said side walls, longitudinal ribs at the opposite edges of said table forming a tape guiding channel therebetween, a presser plate engaging over said table, said plate having rabbeted opposite edge portions engaging said ribs to thereby ofiset downwardly a portion of said plate between said ribs, means carried by said plate and engageable with said side walls for releasably clamping said plate in adjusted position relative to said table, and means providing for the said other means to releasably engage said side walls.

7. The combination with a tape dispensing machine comprising a housing having side walls, a tape guiding table between said walls, guide means carried by said walls on the inner sides thereof and extending upwardly of said table, a presser plate between said walls and above said table, said plate comprising a body member, a pair of parallel spaced apart ribs carried by said member and extending transversely thereof, lating said plate relative to said table.

9. A presser plate for a tape guiding and feeding table comprising a plate-like body, a clamping member disposed transversely of said body and having the opposite ends thereof shiftable relative to the opposite edges of the body, and means engaging said member and said body for shifting the ends of said member relative to the opposite edges of the body to an extent to thereby fixedly hold said plate-like-body in adjusted position relative to the table.

10. In a tape dispensing machine including a housing having side walls and a tape guiding table between said walls; a presser plate adjustably supported above said table, and adjustment means for and carried by said plate engageable with the inner faces of the said side walls in the adjusted position of said plate for holding said plate in a fixed position of adjustment relative to said table.

LEW WA ER G DS'I'EIN, 

